Component mounting system and error stoppage diagnosis method for component mounting device

• US 10,477,751 B2
• Filed: 10/03/2014
• Issued: 11/12/2019
• Est. Priority Date: 10/03/2014
• Status: Active Grant

• Current Assignee: Fuji Company Limited
• Original Assignee: Fuji Company Limited
• Inventors: Hayashi, Shigeki
• Primary Examiner(s): Arbes, Carl J
• Application Number:
  US15/513,206
• Publication Number:
  US 20170311494A1
• Time in Patent Office: 1,866 Days
• CPC Class Codes: G05B 19/418 Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
• CPC Class Codes: G05B 19/41875 characterised by quality surveillance of production
• CPC Class Codes: G05B 2219/32222 Fault, defect detection of origin of fault, defect of product
• CPC Class Codes: G05B 2219/37214 Detect failed machine component, machine performance degradation
• CPC Class Codes: H05K 13/0015 Orientation; Alignment; Positioning
• CPC Class Codes: H05K 13/04 Mounting of components , e.g. of leadless components
• CPC Class Codes: H05K 13/08 Monitoring manufacture of assemblages
• CPC Class Codes: H05K 13/0812 the monitoring devices being integrated in the mounting machine, e.g. for monitoring components, leads, component placement
• CPC Class Codes: H05K 13/083 Quality monitoring using results from monitoring devices, e.g. feedback loops H05K13/084 takes precedence
• CPC Class Codes: Y02P 90/02 Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

In a component mounting system, recovery processing is repeated until a recovery count number Nr is larger than or equal to a defined count number Nth in a case where a pickup defect of a component occurs, an elapsed time is measured from error stoppage of a component mounting machine to canceling of the error stoppage in which the component mounting machine is error-stopped when the recovery count number Nr is larger than or equal to the defined count number Nth, the defined count number Nth is increased within a range in which the defined count number does not exceed the upper limit value Nmax in a case where the elapsed time is shorter than a defined time Tth, and the defined count number Nth returns to an initial value in a case where the elapsed time is longer than or equal to the defined time Tth.

Claims

1. A component mounting system comprising:

a nozzle configured to hold a component, and

a controller configured to

determine whether holding of the component is correctly performed by the nozzle,

control the nozzle to mount the held component on a target object in a case where the controller determines that the holding of the component is correctly performed, and

perform recovery processing of re-performing the holding of the component by the nozzle in a case where the controller determines that the holding of the component is not correctly performed;

count the quantity of times the recovery processing is performed;

error-stop the component mounting system in a case where the quantity of times the recovery processing is performed reaches a defined count number;

cancel the error stoppage of the component mounting device, based on an operation of an operator;

measure an elapsed time from the error stoppage of the component mounting system to the canceling of the error stoppage; and

update the defined count number, based on the measured elapsed time.

2. The component mounting system according to claim 1,

wherein the controller increases the defined count number in a case where the error stoppage is canceled before the elapsed time has reached a predetermined time, and the controller decreases the defined count number in a case where the error stoppage is canceled when the elapsed time has reached the predetermined time or later.

3. The component mounting system according to claim 2,

wherein the controller increases the defined count number by a predetermined count number whenever the error stoppage is canceled before the elapsed time has reached the predetermined time.

4. The component mounting system according to claim claim 2,

wherein the controller causes the defined count number to return to an initial value in the case where the error stoppage is canceled when the elapsed time has reached the predetermined time or later.

5. The component mounting system according to claim 1,

wherein the controller is configured to set an initial value of the defined count number, based on the operation of the operator.

6. The component mounting system according to claim 1,

wherein the controller determines a type of a holding defect, in which the holding of the component is not correctly performed,

the controller counts the quantity of times the recovery processing is performed for each of the types of holding defect,

multiple defined count numbers associated with each of the types of holding defect are set as the defined count number by the controller,

the controller error-stops the component mounting system in a case where the quantity of times the recovery processing is performed reaches a defined count number corresponding to the determined type of holding defect, and

the controller updates the defined count number corresponding to the determined type of holding defect, based on the elapsed time measured by the controller in a case where the component mounting system was error-stopped due to the determined holding defect and then the error stoppage canceled.